Someone has mentioned "Cockos Reaper" and I was curios about its metadata capabilities.
First of all: "Cockos Reaper" is not a tagging software like Mp3tag. Reaper claims to be
... a complete digital audio production application for computers, offering a full multitrack audio and MIDI recording, editing, processing, mixing and mastering toolset.
One of the additional features is to "render" metadata into a track.
For the ID3 "Scheme" you can fill the following fields:
If you modify such fields in Mp3tag an re-read them in Cockos Reaper, they look like this (the Reaper mp3 file properties window is much too tiny to show them all:)
MPEG layer 3, @ 44100 Hz 2 channels
Length: 0:05.875
Encoding: CBR
Channel Mode: Joint Stereo
Bitrate (average): 323 kbps
227 frames in file [indexed]
Metadata:
Title: Reaper Title Mp3tag modified
Artist: Reaper Artist Mp3tag modified
Album: Reaper Album Mp3tag modified
Track: 101
Date: Reaper 2025-12-23
Genre: Reaper Genre Mp3tag modified
Comment: Reaper Comment Mp3tag modifi
Description: Reaper Description Mp3tag modified
BPM: 181
Key: Reaper Key Mp3tag modified
Media Explorer Tags: Reaper Media Explorer Tags Mp3tag modified
ID3 tags:
COMM: Reaper Comment Mp3tag modifi
COMM:eng: Reaper Comment Mp3tag modified
TALB: Reaper Album Mp3tag modified
TBPM: 181
TCOM: Reaper Composer Mp3tag modified
TCON: Reaper Genre Mp3tag modified
TCOP: Reaper Copyright Mp3tag modified
TEXT: Reaper Lyricist Mp3tag modified
TIME: 0849
TIT1: Reaper Content Group Mp3tag modified
TIT2: Reaper Title Mp3tag modified
TIT3: Reaper Description Mp3tag modified
TKEY: Reaper Key Mp3tag modified
TPE1: Reaper Artist Mp3tag modified
TPE2: Reaper Album Artist Mp3tag modified
TPOS: 22
TRCK: 101
TSRC: Reaper ISRC Mp3tag modified
TXXX:MUSICIANCREDITS: Reaper Musician Credits: Mp3tag modified
TXXX:REAPER: Reaper Media Explorer Tags Mp3tag modified
TYER: Reaper 2025-12-23
USLT:ger:
Reaper Lyrics
And more lines
and more lines
Mp3tag modified
Other file sections:
ID3:IPLS
The surprising possibility of Reaper is that you can add any thinkable field as TXXX frame. They call it "User Defined" and you can enter whatever name and value you like.
(see the yellow highlighted part in the first screenshot) Therefore it is also possible to add the discussed TXXX:BPM
Unfortunately, this also writes unwished APE tags in my mp3 test tracks.
I also found no way to change the ID3 format to ID3v2.3. "Cockos Reaper" writes the metadata as ID3v2.4 by default. Please check the compatibility with your own devices if you think about using this software.
Anyway:
To add a "User Defined" TXXX:BPM
File -> Project Render Data
Double Click on the empty value column at the row "User Defined"
Enter the Name: BPM
Enter =
Enter the value: 123
Press OK
You have to "render" the music track to get this metadata written.
(At least I have not yet found any other way to write this User Defined metadata directly and immediately in the fields of an existing track with Reaper.)
The official BPM tag (TBPM) can be filled much more easily:
Just right click on the track in the Media Explorer.
Click on "Edit Metadata tag"
Choose BPM
Enter the value and press OK
BPM is the common name and abbreviation for BeatsPerMinute.
Every software can choose a describing name as they want (like "Tempo" and similar...)
As long as all software is using the same and unique TBPM inside the mp3 music track, every compatible software can read, manipulate and save it.
Yes I said I work in the studio with the Reaper Software program, I like what they say: Without Limits, and it's true...
As I already wrote to you, it's my friend Martin, who is a REAPER champion: he programs everything I need, I asked him to program really complicated utilities, he always succeeded (he programmed me a TELEPROMPTER Basic with Reaper)
There is so much to learn in this program, I was just shown what I wanted to know, I mainly use Reaper for recording in the studio, for the moment I edit the audio files with another program, when I have time, I will ask him how to edit the audio with Reaper...
You are funny, I know it is not Reaper assistance, but thank you anyway for teaching me what you have discovered ...
Hello Ohrenkino, yes you are right, LyricsLover, Florian, I have already received this link from them too, I noticed,
BPM, TBPM, Tempo, Beats per minute, the tags are written in the same word family, if I may say so
We see from Internal to ID3v2.4 that it is BPM and TBPM and that the Tag has changed from Mp4, it is tmpo (tempo)
Mastroska T=30, t for tempo I suppose
ASF/Windows Media WM/BeatsPerMinute (Windows Media/BPM)
For the info on the riffs, I did a search on Mp3tag, you already talked about it with Florian
No, T for target type. The tag mapping table is a bit misleading for Matroska. You can have tags for different targets, target 30 would be the track/song, and e.g. T=50 would be for the album. Depending on the target the same tag has a bit different meaning. E.g. TITLE for T=30 is the track title, TITLE for T=50 the album title.
The BPM tag is actually called "BPM", and would be stored with target 30 by MP3Tag. As you see naming of tags can be quite different based on the format. There are often strict technical reasons, like e.g. frame names being 4 bytes long for ID3.
A tagging software that supports many formats will present tags from different formats with a common name and handle the mapping in the background.
I know it is not Reaper assistance, but thank you anyway for teaching me what you have discovered 